primo commit

libraries/f0f/model/behavior/language.php

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+<?php
+/**
+ * @package     FrameworkOnFramework
+ * @subpackage  model
+ * @copyright   Copyright (C) 2010-2016 Nicholas K. Dionysopoulos / Akeeba Ltd. All rights reserved.
+ * @license     GNU General Public License version 2 or later; see LICENSE.txt
+ */
+// Protect from unauthorized access
+defined('F0F_INCLUDED') or die;
+
+/**
+ * FrameworkOnFramework model behavior class to filter front-end access to items
+ * based on the language.
+ *
+ * @package  FrameworkOnFramework
+ * @since    2.1
+ */
+class F0FModelBehaviorLanguage extends F0FModelBehavior
+{
+	/**
+	 * This event runs before we have built the query used to fetch a record
+	 * list in a model. It is used to blacklist the language filter
+	 *
+	 * @param   F0FModel        &$model  The model which calls this event
+	 * @param   F0FDatabaseQuery  &$query  The model which calls this event
+	 *
+	 * @return  void
+	 */
+	public function onBeforeBuildQuery(&$model, &$query)
+	{
+		if (F0FPlatform::getInstance()->isFrontend())
+		{
+			$model->blacklistFilters('language');
+		}
+	}
+
+	/**
+	 * This event runs after we have built the query used to fetch a record
+	 * list in a model. It is used to apply automatic query filters.
+	 *
+	 * @param   F0FModel        &$model  The model which calls this event
+	 * @param   F0FDatabaseQuery  &$query  The model which calls this event
+	 *
+	 * @return  void
+	 */
+	public function onAfterBuildQuery(&$model, &$query)
+	{
+		// This behavior only applies to the front-end.
+		if (!F0FPlatform::getInstance()->isFrontend())
+		{
+			return;
+		}
+
+		// Get the name of the language field
+		$table = $model->getTable();
+		$languageField = $table->getColumnAlias('language');
+
+		// Make sure the access field actually exists
+		if (!in_array($languageField, $table->getKnownFields()))
+		{
+			return;
+		}
+
+		// Make sure it is a multilingual site and get a list of languages
+		$app = JFactory::getApplication();
+		$hasLanguageFilter = method_exists($app, 'getLanguageFilter');
+
+		if ($hasLanguageFilter)
+		{
+			$hasLanguageFilter = $app->getLanguageFilter();
+		}
+
+		if (!$hasLanguageFilter)
+		{
+			return;
+		}
+
+		$lang_filter_plugin = JPluginHelper::getPlugin('system', 'languagefilter');
+		$lang_filter_params = new JRegistry($lang_filter_plugin->params);
+
+		$languages = array('*');
+
+		if ($lang_filter_params->get('remove_default_prefix'))
+		{
+			// Get default site language
+			$lg = F0FPlatform::getInstance()->getLanguage();
+			$languages[] = $lg->getTag();
+		}
+		else
+		{
+			$languages[] = JFactory::getApplication()->input->getCmd('language', '*');
+		}
+
+		// Filter out double languages
+		$languages = array_unique($languages);
+
+		// And filter the query output by these languages
+		$db = F0FPlatform::getInstance()->getDbo();
+
+		// Alias
+		$alias = $model->getTableAlias();
+		$alias = $alias ? $db->qn($alias) . '.' : '';
+
+		$languages = array_map(array($db, 'quote'), $languages);
+		$query->where($alias . $db->qn($languageField) . ' IN (' . implode(',', $languages) . ')');
+	}
+
+	/**
+	 * The event runs after F0FModel has called F0FTable and retrieved a single
+	 * item from the database. It is used to apply automatic filters.
+	 *
+	 * @param   F0FModel  &$model   The model which was called
+	 * @param   F0FTable  &$record  The record loaded from the databae
+	 *
+	 * @return  void
+	 */
+	public function onAfterGetItem(&$model, &$record)
+	{
+		if ($record instanceof F0FTable)
+		{
+			$fieldName = $record->getColumnAlias('language');
+
+			// Make sure the field actually exists
+			if (!in_array($fieldName, $record->getKnownFields()))
+			{
+				return;
+			}
+
+			// Make sure it is a multilingual site and get a list of languages
+			$app = JFactory::getApplication();
+			$hasLanguageFilter = method_exists($app, 'getLanguageFilter');
+
+			if ($hasLanguageFilter)
+			{
+				$hasLanguageFilter = $app->getLanguageFilter();
+			}
+
+			if (!$hasLanguageFilter)
+			{
+				return;
+			}
+
+			$lang_filter_plugin = JPluginHelper::getPlugin('system', 'languagefilter');
+			$lang_filter_params = new JRegistry($lang_filter_plugin->params);
+
+			$languages = array('*');
+
+			if ($lang_filter_params->get('remove_default_prefix'))
+			{
+				// Get default site language
+				$lg = F0FPlatform::getInstance()->getLanguage();
+				$languages[] = $lg->getTag();
+			}
+			else
+			{
+				$languages[] = JFactory::getApplication()->input->getCmd('language', '*');
+			}
+
+			// Filter out double languages
+			$languages = array_unique($languages);
+
+			if (!in_array($record->$fieldName, $languages))
+			{
+				$record = null;
+			}
+		}
+	}
+}